Thanks for all the advice. We ended up getting a cheap mtn bike from Walmart and took it to her yesterday. Most of the bikes in the bike racks were also cheap mtn bikes from Walmart. There were a couple of Trek bikes locked and double locked though. She said she would just as soon have a single speed bike, but the tires on this one are easier to fix flats.
I still don't know how she had the flat, she said she was going really slow over all the bumps, I just think it was the sharp edge of new concrete road.
Anyway, I test rode the bike since I am closest to dd's size and I really enjoyed riding, so I think I am going to keep the Schwinn unless it's too tall for me. Dd said it was a bit of a stretch for her & she's about 4" taller than me. I just need to figure out where I can ride now. I'll check the rim for a lining when we replace this tube. Maybe that was the problem.
cooker, where would we get a rear rack or saddlebags?
lauren, I'd trade, but live in TX.